Pascal Van Hecke – Daily Links

"We present a framework for analyzing privacy and anonymity in social networks and develop a new re-identification algorithm targeting anonymized social-network graphs. To demonstrate its effectiveness on real-world networks, we show that a third of the users who can be verified to have accounts on both Twitter, a popular microblogging service, and Flickr, an online photo-sharing site, can be re-identified in the anonymous Twitter graph with only a 12% error rate."

Although data sets are anonymised, it is possible to derive user identity by comparing social graphs from Flickr, Twitter, Facebook…
(Similar research succeeded in identifying a big part of the anonymous Netflix data set by comparing preferences for movies in both Netflix and Amazon reviews)

"callto:" is a "pseudo-protocol". The actual standard is "tel:".
Since "callto:" is being used by Skype and Netmeeting, and "tel:" is recognised natively by most mobile phones, you better use them for desktops and mobile sites respectively, depending on browser user agent detection.

"two ingredients are now slowly getting into place to turn another privatization attempt of the railways into a success:
1. Full dynamic and open transit data
2. Seamless transit payment"